Sandvik 5R10

Disclaimer: Recommendations are for guidance only, and the suitability of a material for a specific application can be confirmed only when we know the actual service conditions. Continuous development may necessitate changes in technical data without notice. This datasheet is only valid for Sandvik materials.

Sandvik 5R10 is an austenitic chromium-nickel steel with a controlled carbon content in order to obtain improved strength at high temperatures.

Standards

ASTM: TP304, TP304H

UNS: S30400, S30409

EN Number: 1.4301, 1.4948

EN Name: X5CrNi18-10, X6CrNi18-10

W.Nr.: 1.4301

DIN: X 5 CrNi 18 10

SS: 2333

AFNOR: Z 6 CN 18.09

BS: 304S31, 304S51

JIS: SUS304TP

Product standards
Seamless tube and pipe

ASTM A271 and A376

JIS G3459

JIS G3463

EN 10216-5

BS 3605, BS 3606

DIN 17456, 17458

NFA 49-117, 49-217

SS 14 23 33

Approval
JIS Approval for Stainless Steel Tubes

Chemical composition (nominal) %

Chemical composition (nominal) %

C

Si

Mn

P

S

Cr

Ni

0.04

0.4

1.3

≤0.040

≤0.015

18.5

9.5

Subject to agreement, material with extra low Co content can be supplied.

Forms of supply

Seamless tube and pipe

Tube and pipe are normally delivered in the solution annealed and white-pickled condition or in the bright-annealed condition. The size range can be seen from Fig. 1. U-tubes can be delivered on request.

Figure 1. Principal size range for seamless tube and pipe.

Mechanical properties

For tube and pipe with wall thickness greater than 10 mm (0.4 in.) the proof strength may fall short of the stated values by about 10 MPa (1.4 ksi)

At 20°C (68°F)

Metric and imperial units

Proof strength

Tensile strength

Elong.

Rp0.2a)

Rp1.0a)

Rm

Ab)

A2"

MPa

ksi

MPa

ksi

MPa

ksi

%

%

≥210

≥30

≥240

≥35

515-690

75-100

≥45

≥35

1 MPa = 1 N/mm2
a) Rp0.2 and Rp1.0 corresponds to 0.2% offset and 1.0% offset yield strength, respectively.
b) Based on L0 = 5.65 √S0 where L0 is the original gauge length and S0 the original cross-section area.

The hardness (Vickers) is approximately 155

Impact strength

Due to its austenitic microstructure, Sandvik 5R10 has very good impact strength both at room temperature and at cryogenic temperatures.

Tests have demonstrated that the steel fulfils the requirements (60 J (44 ft-lb) at -196 oC (-320 oF)) according to the European standards EN 13445-2 (UFPV-2) and EN 10216-5.

At high temperatures

Metric units

Temperature

Proof strength

Rp0.2

Rp1.0

°C

MPa

MPa

min

min

50

190

215

100

165

190

150

150

175

200

140

165

250

130

155

300

125

150

350

120

145

400

115

140

450

110

135

500

105

130

550

100

125

600

95

120

Imperial units

Temperature

Proof strength

Rp0.2

Rp1.0

°F

ksi

ksi

min

min

200

24

28

400

20

24

600

18

22

800

16

20

1000

15

18

Creep-rupture strength (ISO-values)

Temperature

10 000 h

100 000 h

°C

°F

MPa

ksi

MPa

ksi

approx.

approx.

approx.

approx.

550

1020

195

28.3

115

16.6

575

1065

147

21.3

93

13.5

600

1110

122

17.6

74

10.7

625

1155

100

14.5

58

8.4

650

1200

79

11.5

45

6.5

675

1245

64

9.2

33

4.8

700

1290

48

7.0

23

3.3

Physical properties

Density: 7.9 g/cm3, 0.29 lb/in3

Thermal conductivity

Temperature, °C

W/m °C

Temperature, °F

Btu/ft h °F

20

14

68

8

100

15

200

8.5

200

17

400

10

300

18

600

10.5

400

20

800

11.5

500

21

1000

12.5

600

23

1100

13

Specific heat capacity

Temperature, °C

J/kg °C

Temperature, °F

Btu/lb °F

20

485

68

0.11

100

500

200

0.12

200

515

400

0.12

300

525

600

0.13

400

540

800

0.13

500

555

1000

0.13

600

575

1100

0.14

Thermal expansion 1)

Temperature, °C

Per °C

Temperature, °F

Per °F

30-100

16.5

86-200

9.5

30-200

17

86-400

9.5

30-300

17.5

86-600

10

30-400

18

86-800

10

30-500

18.5

86-1000

10

30-600

18.5

86-1200

10.5

30-700

19

86-1400

10.5

1) Mean values in temperature ranges (x10-6)

Modulus of elasticity 1)

Temperature, °C

MPa

Temperature, °F

ksi

20

200

68

29.0

100

194

200

28.2

200

186

400

26.9

300

179

600

25.8

400

172

800

24.7

500

165

1000

23.5

1) (x103)

Corrosion resistance

General corrosion

Sandvik 5R10 has good resistance in:

Organic acids at moderate temperatures

Salt solutions, e.g. sulfates, sulfides and sulfites.

Caustic solutions at moderate temperatures

The risk of general corrosion in sulfuric acid during shut down periods has to be taken into account. Since Sandvik 5R10 is not alloyed with molybdenum, the grade can only tolerate low concentrations at limited temperatures. In naturally aerated sulfuric acid the corrosion rate is below 0.1 mm/year provided the temperature is not higher than 20°C (68oF) in 5% solution.

Intergranular corrosion

Sandvik 5R10 has a relatively high carbon content. Thus, there is a certain risk of reduced intergranular corrosion resistance if the steel has become sensitized after e.g. improper heat treatment or welding. Sandvik 3R12 has a significantly lower carbon content and is therefore more safe regarding intergranular attack.

Pitting and crevice corrosion

The steel may be sensitive to pitting and crevice corrosion even in solutions of relatively low chloride content. Molybdenum alloyed steels have better resistance and the resistance improves with increasing molybdenum content.

Stress corrosion cracking

Austenitic steel is susceptible to stress corrosion cracking. This may occur at temperatures above about 60°C (140°F) if the steel is subjected to tensile stresses and at the same time comes into contact with certain solutions, particularly those containing chlorides. Such service conditions should therefore be avoided. Conditions when plants are shut down must also be considered, as the condensates which are then formed can develop conditions that lead to both stress corrosion cracking and pitting.

Gas corrosion

Sandvik 5R10 can be use in

Air up to 850°C (1560°F)

Steam up to 750°C (1380°F)

Synthesis gas (ammonia synthesis) up to about 550°C (1020°F)

Creep behavior should also be taken into account when using the steel in the creep range. In flue gases containing sulfur, the corrosion resistance is reduced. In such environments the steel can be used at temperatures up to 600-750°C (1110-1380°F) depending on service conditions.

Factors to consider are whether the atmosphere is oxidizing or reducing, i.e. the oxygen content, and whether impurities such as sodium and vanadium are present.

Heat treatment

The tubes are normally delivered in heat treated condition. If additional heat treatment is needed after further processing the following is recommended.

Stress relieving

850-950°C (1560-1740°F), cooling in air.

Solution annealing

1000-1100°C(1830-2010°F), rapid cooling in air or water.

Welding

The weldability of Sandvik 5R10 is good. Welding must be carried out without preheating and subsequent heat treatment is normally not required. Suitable methods of fusion welding are manual metal-arc welding (MMA/SMAW) and gas-shielded arc welding, with the TIG/GTAW method as first choice.

For Sandvik 5R10, heat input of <1.5 kJ/mm and interpass temperature of <150°C (300°F) are recommended.

Recommended filler metals

TIG/GTAW or MIG/GMAW welding

ISO 14343 S 19 9 H / AWS A5.9 ER308H

MMA/SMAW welding

ISO 3581 E 19 9 H R / AWS A5.4 E308H-17

Bending

Annealing after cold bending is not normally necessary, but this point must be decided with regard to the degree of bending and the operating conditions. Heat treatment, if any, should take the form of stress relieving or solution annealing, see under "Heat treatment".

Hot bending is carried out at 1100-850°C (2010-1560°F) and should be followed by solution annealing.

Applications

Sandvik 5R10 is used for a wide range of industrial applications with emphasis on high temperature processes. Typical examples are: heat exchangers, condensers, pipelines, cooling and heating coils in the chemical, petrochemical, fertilizer, pulp and paper and nuclear power industries, as well as in the production of pharmaceuticals, foods and beverages.

Disclaimer: Recommendations are for guidance only, and the suitability of a material for a specific application can be confirmed only when we know the actual service conditions. Continuous development may necessitate changes in technical data without notice. This datasheet is only valid for Sandvik materials.